CN201722210U - Versatile deck runoff series processing unit - Google Patents
Versatile deck runoff series processing unit Download PDFInfo
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- CN201722210U CN201722210U CN2010201347986U CN201020134798U CN201722210U CN 201722210 U CN201722210 U CN 201722210U CN 2010201347986 U CN2010201347986 U CN 2010201347986U CN 201020134798 U CN201020134798 U CN 201020134798U CN 201722210 U CN201722210 U CN 201722210U
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- artificial swamp
- storage
- runoff
- equalizing tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses a versatile deck runoff series processing unit in order to solve the unstable water inlet quality and quantity, large occupation area, hazardous chemical leakage accidents and other problems which occur when deck runoff is processed by a manual wet land. The processing unit mainly consists of a storage and adjusting system and a manual wet land which are connected in series by an ecological ditch. The storage and adjusting system consists of a water inlet pipe, a mechanical constant outflow device, a control valve and an overflow opening. The manual wet land consists of an inlet and an outlet overflow bays and a gravel dam. The initial runoff of deck runoff is mixed and precipitated after entering the storage and adjusting system, and then uniformly flows into the manual wet land by the mechanical constant outflow device at the water outlet of the storage and adjusting system. The water inlet flow of the manual wet land is controlled, so the occupation area of the manual wet land is reduced. The control valve arranged at the water outlet of the storage and adjusting system has hazardous chemical emergency storage functions, so the control valve can effectively process deck runoff and avoid hazardous chemical leakage. Meanwhile, land resources and engineering fees are saved.
Description
Technical field
The utility model belongs to highway environment protection engineering bridge floor runoff process field, relates in particular to a kind of adjusting of carrying out the bridge floor runoff and flows the treatment unit of connecting with the Multifunctional bridge face diameter that processing, hazardous chemical are revealed emergent storage.
Background technology
Along with the quick construction of Chinese highway traffic infrastructure and the continuous growth of goods and materials traffic capacity, leap is more and more to the highway of the higher responsive water body of water quality requirement, highway bridge runoff pollution problem is also more and more outstanding, unheeded always highway bridge runoff pollution problem also causes people's attention gradually.Studies show that both at home and abroad the motorway runoff has certain pollution intensity: organic pollutant in the highway pavement runoff and SS concentration are not less than the Pollutant levels of typical sanitary sewage; CODcr, BOD in the highway pavement runoff
5, SS and petroleum-type concentration is higher than the I level emission limit of " integrated wastewater discharge standard ".Therefore, the water resources protection problem needs to be resolved hurrily in the road construction process.Simultaneously, in recent years, along with expanding economy, highway transport volume day by day increases, and the hazardous chemical pollution incident that causes thus taking place in the transport by road also constantly takes place, and highway environment along the line and HUMAN HEALTH have been caused heavy losses.Current country pays much attention to the emergency disposal problem of safety in production and Serious Accident.
The patent of invention that the bridge floor runoff is handled, application number is 200910183156.7, name is called the built-up type treatment process and the device thereof of bridge floor runoff, publication number is the patent of invention of CN 101624251A, the bridge floor runoff of collecting is carried out oil removal, precipitation process, then, will cause the grass planting slope through the runoff after the above-mentioned processing after, again runoff is fed artificial swamp and carry out biochemical treatment, further improved oil removal, precipitation and processing efficiency.Yet this patent does not have to consider to enter the runoff rate problem of artificial swamp and the leakage problem of hazardous chemical.
Application number is 200610136822.8, name is called road surface runoff treating pool, publication number is the patent of invention of CN100462504C, a kind of road surface runoff treating pool is disclosed, it comprises pretreatment pool, interception cofferdam, communicating pipe and the one-level treating pond that links to each other with the pavement runoff discharge outlet, described interception cofferdam is arranged between pretreatment pool and the one-level treating pond, being used for being communicated with being located at communicating pipe of pretreatment pool and one-level treating pond tackles on the cofferdam, be equipped with filtering layer in the one-level treating pond, effectively reduce the pavement runoff produced pollution.Application number is 200820150883.4, name is called a kind of malicious settling tank that holds, publication number is the utility model of CN 201249056Y, side at the flushing tank is provided with the settling tank of regulating and storing, regulate and store and be provided with first overflow weir between settling tank and the flushing tank, the regulate and store rear end of settling tank is provided with mud-collecting slot, regulates and stores and is provided with second overflow weir between settling tank and the wet well, and wet well is communicated with rising pipe by going out sluice gate.This holds malicious settling tank and can be arranged near the water conservation district road, and the pipe of rain water collecting system, canal enter water source, the river course that needs protection again after holding malicious settling tank.Two patents all are to adopt the simple function treatment process to realize the processing of bridge floor runoff.
This shows that above-mentioned processing bridge floor runoff adopts physics method or biological process usually, the treatment unit that is adopted is for adopting separately settling tank and handle or adopt settling tank and artificial swamp being combined handles.Yet it is also unresolved that above-mentioned patent changes the problems such as leakage that cause the artificial swamp floor space to reach hazardous chemical greatly greatly to the runoff water matter water yield.
Because the defective that above-mentioned existing bridge floor footpath current processing device exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and expertise, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of new Multifunctional bridge face diameter stream series connection treatment unit, can improve general existing bridge floor runoff device, make it have more practicality.Through constantly research, design, and after studying repeatedly and improving, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present utility model is, overcome the defective that existing bridge floor footpath current processing device exists, and provide a kind of new Multifunctional bridge face diameter current processing device, technical problem to be solved is to make its water quality treatment variation bridge floor runoff greatly effectively, can guarantee that again the artificial swamp floor space is little, joint disposal ability to multiple pollutent is strong, and the processing efficiency height is very suitable for practicality.
Another purpose of the present utility model is, a kind of new Multifunctional bridge face diameter current processing device is provided, and technical problem to be solved is to make its emergent memory function with hazardous chemical, thereby is suitable for practicality more.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to the Multifunctional bridge face diameter stream series connection treatment unit that the utility model proposes, it mainly constitutes by storing regulation system and artificial swamp polyphone, is linked to each other by ecological ditch between the two, and wherein said storage regulation system comprises:
Store equalizing tank, above the storage equalizing tank, join with bridge floor runoff water inlet pipe.Store the equalizing tank pool wall and be provided with overflow port.
Mechanical type is constant to go out to flow device, is arranged on to store on the storage equalizing tank pool wall of equalizing tank near a side in ecological ditch.This mechanical type is constant to go out to flow device by the flashboard slot that is arranged on this storage equalizing tank pool wall, be embedded in the flashboard in the flashboard slot, the spring that joins with flashboard, the ball float that joins with spring, be arranged on this flashboard slot on rising pipe and the control valve that is arranged on this rising pipe form.
Aforesaid Multifunctional bridge face diameter stream series connection treatment unit, wherein said artificial swamp comprises:
Overflow weir is by the water inlet overflow weir that is located at artificial swamp one side be located at artificial swamp opposite side water outlet overflow weir and constitute;
The gravel dam is made of a plurality of gravels dam, is arranged in the artificial swamp 7.
There are problems such as influent quality water yield instability, floor space are big, hazardous chemical leakage accident in the utility model when handling the bridge floor runoff at artificial swamp, invented a kind of Multifunctional bridge face diameter stream series connection treatment unit, the processing of the initial stage of carrying out runoff, go out to flow device by the mechanical type that stores regulation system is constant, controlled the flooding velocity of artificial swamp, reduced the floor space of artificial swamp greatly, the emergent memory function that control valve has hazardous chemical concurrently has been set.Compared with prior art the art of this patent has the following advantages:
(1) the utility model adopt to store regulation system and the artificial swamp treatment process of connecting through ecological ditch, and is different with single bridge floor runoff treatment process, has multi-functional disposing capacity concurrently, strong to the joint disposal ability of multiple pollutent, the processing efficiency height.
(2) the utility model adopts and stores the regulation system useful volume for holding 30 minutes initial stage runoff rate of continuous rainfall under the 10 years one chances storm intensity of locality, overflow port is set the runoff above 30 minutes is discharged by overflow port, reduces the processing load of wetland.
(3) storage regulation system water flow of the present utility model goes out to flow the flow that device control enters artificial swamp by mechanical type is constant, avoided owing to come water unstable to cause impact to artificial swamp, be provided with that mechanical type is constant to go out to flow device control artificial swamp flooding velocity, can reduce the area of artificial swamp greatly.
(4) storage regulation system water outlet of the present utility model place is provided with control valve, have hazardous chemical concurrently and reveal the accident emergency storing unit, when accident takes place, can in time close the control valve that stores regulation system, avoid hazardous chemical to enter artificial swamp, reduce the artificial swamp pollution load.
(5) artificial swamp shape of the present utility model is taked irregular shape according to landform, and side slope slows down, cuts top, circle slope is convenient to vegetation growth.Inlet and outlet water is provided with overflow weir, and the bed body is provided with gravel dam, three roads, has prolonged the residence time of sewage in wetland, can contact the pollutent in the advanced treatment runoff with microorganism fully.Store equalizing tank and connected by ecological ditch with artificial swamp, the ecological ditch of flowing through can further be purified.This artificial swamp not only has processing capacity, also has good beautification of landscape effect.
(6) the utility model is taken all factors into consideration the pollution feature of bridge floor runoff and the leakage accident of water yield feature and hazardous chemical; by storing regulation system and artificial swamp series connection treatment process and device thereof; carry out the emergent storage of processing of bridge floor runoff pollution and hazardous chemical; to protecting responsive water quality to have very important realistic meaning, realize the maximization of social benefit, economic benefit and environmental benefit.
Description of drawings
Fig. 1: the utility model process flow sheet;
Fig. 2: the utility model stores the regulation system orthographic plan;
Fig. 3: the utility model stores regulation system longitudinal section synoptic diagram;
Fig. 4 A: the utility model mechanical type is constant to go out to flow the apparatus structure orthographic plan;
Fig. 4 B: the utility model mechanical type is constant to go out to flow the apparatus structure synoptic diagram;
Fig. 5: the utility model artificial swamp floor map;
Fig. 6: the utility model artificial swamp structural profile synoptic diagram.
1: bridge floor runoff water inlet pipe 2:. stores equalizing tank
3: mechanical type is constant to go out to flow device 4: control valve
5: rising pipe 6: ecological ditch
7: artificial swamp 8: overflow port
9: flashboard 10: flashboard slot
11: store equalizing tank pool wall 12: ball float
13: spring 14: the water inlet overflow weir
15: water outlet overflow weir 16: the gravel dam
17: filler
Embodiment
For further setting forth the utility model is to reach technique means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the Multifunctional bridge face diameter that the utility model proposes stream series connection treatment unit structure its concrete feature and effect thereof, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present utility model can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation by embodiment, when can being to reach technique means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the utility model, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the utility model is limited.
See also Fig. 1-shown in Figure 5, the Multifunctional bridge face diameter stream series connection treatment unit of the utility model preferred embodiment, it mainly comprises: store regulation system and artificial swamp 7 polyphones, linked to each other by ecological ditch 6 between the two.Wherein,
Equalizing tank 2 and mechanical type are constant to be gone out to flow device 3 and constitutes by storing to store regulation system.See also shown in Fig. 1,2,3, the top that stores equalizing tank 2 is provided with bridge floor runoff water inlet pipe 1, and any storage equalizing tank pool wall 11 that stores equalizing tank 2 is provided with overflow port 8.See also Fig. 1-Fig. 4, mechanical type is constant to be gone out to flow device and is made of flashboard slot 10, flashboard 9, spring 13, ball float 12, rising pipe 5, control valve 4.Wherein, this mechanical type is constant to be gone out to flow device and is arranged on and stores in the equalizing tank 2, near going out to flow device apart from the mechanical type of bottom 20cm place installation is constant on the storage equalizing tank pool wall 11 of the side in ecological ditch 6.Flashboard slot 10 is arranged on this storage equalizing tank pool wall 11, and flashboard 9 is embedded in the flashboard slot 10, and ball float 12 is connected by spring 13 with flashboard 9, and below, control valve 4 that rising pipe 5 is arranged on this flashboard slot 10 are arranged on this rising pipe 5.
See also Fig. 5-Fig. 6, described artificial swamp 7 is made of water inlet overflow weir 14, water outlet overflow weir 15, three gravel dams 16.
See also shown in Figure 1ly, the bridge floor runoff at first enters the storage equalizing tank 2 that stores regulation system by bridge floor runoff water inlet pipe 1 and mixes fully, precipitates.This storage equalizing tank 2 is to take in, precipitate the initial stage runoff, stablize water flow, prevent the device that hazardous chemical is revealed, and is the cubes of masonry structure.According to the characteristics of bridge floor runoff, the runoff pollution thing reached peak value in 30 minutes, and is up to standard substantially after 45 minutes.Therefore, store the regulation system volume and calculate according to local Rain Intensity Formula Based, open ended run-off is 30 minutes the water yield of local 10 years one chance heavy rain continuous rainfall, can guarantee to collect the rainfall of long-term different rainfalls.In artificial swamp 7 one sides water outlet overflow weir 15 is set, guarantees to collect the preceding 30 minutes water yield of rainfall, the part that surpasses is overflowed by the water outlet overflow weir, reduces the traffic load to artificial swamp.
See also Fig. 4, shown in Figure 5,, according to the water level that stores regulation system, flashboard 9 will open or cut out inner water outlet, change the area of water outlet thus, reach the effect of set water flow.By reducing the water outlet water yield, can significantly reduce the floor space of artificial swamp 7, also can avoid impact and the destruction of bridge floor runoff water quality and quantity instability to artificial swamp 7.
Control valve 4 is installed storing the outside rising pipe of regulation system place, when causing danger the chemical spill accident, but the valve of closed control valve 4 prevent from directly to enter artificial swamp 7, cause severe contamination.
Artificial swamp 7 is built into irregularly shaped according to local landform, long-width ratio was less than 3: 1, the artificial swamp full depth is 110cm, and depth of packing is 50cm, and the depth of water is 60cm, the two ends of artificial swamp 7 respectively are provided with into water overflow weir 14, water outlet overflow weir 15, be provided with 3 gravel dams 16 in 7 of the artificial swamps, this gravel dam 16 is about 100cm, the wide 100cm in top, the wide 200cm in bottom, the surface is fixed with wire netting.The water that flows to from ecological ditch 6 slowly overflows in the artificial swamp 7 by water inlet overflow weir 14, prolonged the residence time of current by gravel dam 16, also increased simultaneously sewage and biological duration of contact, reached the purpose of deeply treating wastewater, slowly overflowed by water outlet overflow weir 15 at last.
Technical process
After rainfall formed runoff, the runoff that compiles entered by water inlet pipe 1 and stores in the equalizing tank 2, mixes, precipitates.According to the size and the water level of run-off, mechanical type is constant to be gone out to flow device 3 and starts working, and makes water flow reach set flow, is slowly flowed in the ecological ditch 6 by rising pipe 5, can further purify water in the process of flowing through.Runoff is by water inlet overflow weir 14 places in the ecological water ditch inflow artificial swamp 7, to the bed of artificial swamp 7, gravel dam 16 is set in the artificial swamp 7 by the overflow weir overflow, has prolonged the path of current, planted multiple waterplant simultaneously, the pollutent in the absorption degradation bridge floor runoff.Slowly overflow by water outlet overflow weir 15 at last, be disposed to local water exhaust system or irrigation canals and ditches through ecological ditch 6 again.Thus, the bridge floor runoff is by storing the purpose that regulation system, ecological ditch 6, artificial swamp 7 are purified layer by layer.In addition, when hazardous chemical enters storage equalizing tank 2, closing of control valve 4 is set, reveals to prevent hazardous chemical by storing on the regulation system rising pipe 5.
Present embodiment is used for certain southern motorway and strides the one-level water conservation district, the long 472m of bridge of one-sided collection bridge floor runoff, and the wide 40m of bridge, water catchment area is 18080m
2Responsive water body grand bridge bridge floor runoff utilizes the utility model, be provided with the storage regulation system, the bridge floor runoff of collecting is introduced the storage regulation system, by the adjusting of water flow, the floor space of its artificial swamp is reduced greatly, when the condition of storage system being set and not establishing the storage regulation system, the artificial swamp floor space differs 48 times, and is as shown in table 1.
The design calculates 10 circannian extra torrential rain intensity according to the local Rain Intensity Formula Based in certain south, according to the water catchment area of hydraulic detention time and bridge floor, calculates runoff volume again.
1) calculation formula of design storm intensity (q) is as follows:
In the formula: P---the heavy rain design reoccurrence period, get 10a among the design;
T---design rainfall duration, min;
t
1---the ground inlet time, min is at this value 5min;
t
2---the popular time in the pipe duct, min gets 0;
M---delaying coefficient, general pipeline value is 2.
By above formula and parameter value, calculating the most torrential rain intensity that enters pipeline is q=534.28L/ (shm
2).
2) selection of runoff coefficient (Ф)
Under the Different Ground coverage condition, the value difference of runoff coefficient, present embodiment high speed highway is a bituminous pavement, therefore, runoff coefficient gets 0.90.
3) water catchment area (F) determines
According to following formula
In the formula: F---water catchment area, hm
2
B---bridge deck width, m, bridge deck width is 40m in the present embodiment;
L---bridge is long, m, and taking the bridge section among the design is 472m;
According to above-mentioned formula and value, can calculate water catchment area is 1.808hm
2
4) collecting pipe and water shoot design discharge determines
Formula calculated below the bridge floor runoff rate adopted:
Q＝qФF?p，L/S。
In the formula: Q---the design discharge of pipeline, L/S;
Q---design storm intensity, L/ (shm
2);
Ф---runoff coefficient;
F---water catchment area, hm
2
P---collection rate according to test value, gets 70%
According to above-mentioned formula calculation result, can calculate the bridge floor runoff rate is 608.57L/s, i.e. 52580m
3/ d.
This shows that bridge floor runoff flooding velocity is 52580m
3/ d, the artificial swamp area is directly proportional with flooding velocity.If do not establish the storage regulation system, directly enter artificial swamp 7, artificial swamp 7 areas are 6.864ha, build to store regulation system, go out to flow device by mechanical type is constant, with flow control at 1095.42m
3During/d, artificial swamp 7 areas are 0.143ha, and both areas differ 48 times.
Table 1 artificial swamp area comparison sheet
| ? | Flow (m 3/d)? | Artificial swamp area (ha) |
| There is not the regulation system of storage | 52580? | 6.864? |
| Build and store regulation system | 1095.42? | 0.143? |
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. a Multifunctional bridge face diameter flows the series connection treatment unit, and it mainly constitutes by storing regulation system and artificial swamp (7) polyphone, and continuous by ecological ditch (6) between the two, it is characterized in that: described storage regulation system comprises:
Store equalizing tank (2), join, store equalizing tank pool wall (11) and be provided with overflow port (8) at the top and the bridge floor runoff water inlet pipe (1) that store equalizing tank (2);
Mechanical type is constant to go out to flow device, be arranged on and store on the storage equalizing tank pool wall (11) of equalizing tank (2) near ecological ditch (6) one sides, this mechanical type is constant to go out to flow device by the flashboard slot (10) that is arranged on this storage equalizing tank pool wall (11), be embedded in the flashboard (9) in the flashboard slot (10), the spring (13) that joins with flashboard (9), the ball float (12) that joins with spring, be arranged on this flashboard slot (10) on rising pipe (5) and the control valve (4) that is arranged on this rising pipe (5) form.
2. Multifunctional bridge face diameter stream series connection treatment unit according to claim 1 is characterized in that described artificial swamp (7) comprising:
Overflow weir is by the water inlet overflow weir (14) that is located at artificial swamp (7) one sides be located at artificial swamp (7) opposite side water outlet overflow weir (15) and constitute;
Gravel dam (16) is made of a plurality of gravels dam (16), is arranged in the artificial swamp (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201347986U CN201722210U (en) | 2010-03-17 | 2010-03-17 | Versatile deck runoff series processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201347986U CN201722210U (en) | 2010-03-17 | 2010-03-17 | Versatile deck runoff series processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201722210U true CN201722210U (en) | 2011-01-26 |
Family
ID=43490522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201347986U Expired - Fee Related CN201722210U (en) | 2010-03-17 | 2010-03-17 | Versatile deck runoff series processing unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381805A (en) * | 2011-08-03 | 2012-03-21 | 交通运输部科学研究院 | Method and device for comprehensively purifying runoff rainwater |
| CN103437282A (en) * | 2013-09-12 | 2013-12-11 | 山西省交通环境保护中心站 | Highway bridge deck runoff collecting system |
| CN107505336A (en) * | 2017-10-17 | 2017-12-22 | 蓝衍（郑州)环保有限公司 | Highway and grand bridge deck runoff water quality safety real-time inspection and control system |
| CN108218135A (en) * | 2018-02-13 | 2018-06-29 | 中山市环境保护科学研究院有限公司 | Crossing bridge environmental improvement system |
| CN109354323A (en) * | 2018-11-30 | 2019-02-19 | 南昌大学 | A kind of wellhead protection zone highway runoff self-circulation purifying emergency system |
| CN113562849A (en) * | 2021-08-11 | 2021-10-29 | 傅光华 | Wetland restoration system and technology |
| CN113700113A (en) * | 2021-09-01 | 2021-11-26 | 保定市水利水电勘测设计院 | Novel drainage system of hydraulic engineering channel |
-
2010
- 2010-03-17 CN CN2010201347986U patent/CN201722210U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381805A (en) * | 2011-08-03 | 2012-03-21 | 交通运输部科学研究院 | Method and device for comprehensively purifying runoff rainwater |
| CN103437282A (en) * | 2013-09-12 | 2013-12-11 | 山西省交通环境保护中心站 | Highway bridge deck runoff collecting system |
| CN103437282B (en) * | 2013-09-12 | 2016-03-30 | 山西省交通环境保护中心站 | A kind of highway bridge runoff gathering system |
| CN107505336A (en) * | 2017-10-17 | 2017-12-22 | 蓝衍（郑州)环保有限公司 | Highway and grand bridge deck runoff water quality safety real-time inspection and control system |
| CN108218135A (en) * | 2018-02-13 | 2018-06-29 | 中山市环境保护科学研究院有限公司 | Crossing bridge environmental improvement system |
| CN109354323A (en) * | 2018-11-30 | 2019-02-19 | 南昌大学 | A kind of wellhead protection zone highway runoff self-circulation purifying emergency system |
| CN113562849A (en) * | 2021-08-11 | 2021-10-29 | 傅光华 | Wetland restoration system and technology |
| CN113700113A (en) * | 2021-09-01 | 2021-11-26 | 保定市水利水电勘测设计院 | Novel drainage system of hydraulic engineering channel |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20120317 |